Plug for rubber heels.



s. FBLHMAN. PLUG FOR RUBBER- HE APPLICATION FILED MAY 15, 191-2.

ELS-

Patexlted DH). 15, 1914-.

I @4311 cos no EAIYZU :QELPMAILJ, 3E CHEFLSEEL MIASSACHfiSETTS.

F018; RUBBER HEELS.

Specification of Letters 'Betenlt.

Patented Dee. 3155, 19142.

Application {flee Mag; 15,1914. Serial No. 538,750.

utetes, residing at Cheleoiimty etfiutfolk, Steteof Mes ts, have invented certain .new and s prevetmen iii Pines rm: Robber l '4 re following description of and use the sa me, s UZYEDUOIL relates to rubber treads ilar nature We particularly to a type of rubber tread "whieii reinforced increase its do rel iiit and to prevent slipping.

Applicant 1s mivzire that many treads nave been pro ided with rhfiei'ently shaped plugs of o and he. 7

en tonne lr be a; vertical be worn 23;, y enoi. W]

:2 i I extentling threads to become ieosenecl onrthe plug eeueing zm unsightly appearance. Furthermore this type of plug lies on additional disadvantage of being sufiieiently open in its structure, "eeielly use, that mud and other dirt is iia ble to eollecttherein.

, The object of the present invention is to eliminate these disadvantages and to pro- 311C591 a tread reinforcing plug of such a charueter that it will be more resilient and (loreble than the present type of plug, will greatly decrease the liability of slipping and eomyesecl such material that there are no "esent to become loosened.

specifically the ebjeetof this inven- 111 provitle a ping composetl of a strip woiinri. in spiral form the veitions 01: which are secured to term it durable mess. The spiral olmmns eeriorinmg the funetien of pro In Figs. 3

therein, Fi 2 s a cross sectional View the 'e 011 Fig. 3 is a view similar to Fig. 1 show-- 511g 2*. modified. form of my device, and Fig. l is a cross sectional View through Fig. 3. '1

Referring more particularly to the dra n ings the numeral 5 designates an elastic heel tree-ti such as is eoinmonly agpliecl to shoes, boots, orthe like. The heel tread 5 is provided with a recess 6 for the reception of my improverl plug to be (iescribed.

My improved slug embodies the use of. leet r instead 0 abrie for the reason that iee'ivher (lees not eomprise any threads which might heeen e ioese or reveled from Wear.

"ornie i my improveci plug it In the is preferable to superpose 2: sheet of rubber upon asheet of leather the two being; eemented firmly tegeth r by rubber eement or the like. The two cemented sheets should then he rolled. so to form a spiral anti sections :11 e5 cut therefrom of the de sired thickness. These seetiens are then in serte i within the recess 6 in the tread whereinithey may be securely and perine- '90 nently held by vnleanizing the tread ancl' plug. v

en 4: I have shown a modified form of the device. In this form the rubber sheet '2' is Olnittfld and the sheet of leather 8 95 is coated upon one side with a good rubber cement after which is rolled up into ec lindrical hape as in the first form described. From an inspection-of the drawings and study of the description it will be apparent 106 that in view at the feet fabric is not lised in the formation of these plugs that regardless of to how great a degree the tread and plug may become Worn the plug will always present a clean and clear out appearance and we cannot revel out or become in any other manner iinsig tly. It is else to be observed the; this plug is very l'ght in Weight and 15s the add enel advantage of be g ineeneele of Having thus described my invention what I claim is:

1. A. tread comprising a rubber body and a wear -resisting plug embedded therein, said plug being composed of a sheet of leather and a sheet of rubber rolled to form a plurality of spiral convolutions.

2. A tread comprising a rubber body and a Wear resisting plug embedded therein,v

a wear resisting plug embedded therein, said plug being composed of a sheet of leather and a sheet of rubber rolled to form a plurality of spiral convolutions, and means for uniting said leather and said rubber and said convolutions.

5. A. tread comprising a rubber body and a Wear resisting plug embedded therein, said plug being composed of a sheet of leather and a layer of rubber rolled to form a plurality of spiral convolutions, and cement for holding said leather and rubber together, said plug being vulcanized to unite said convolutions.

In testimony whereof, I afiix my signature, in the presence of two witnesses.

SAMUEL FELDMAN. Witnesses:

Ii-USSEL KEREN, BARNEY IVIANNQ 

